Add an additional Injector to your MR-2, MR-3 or MR-5 Protein Skimmer.  This easy addition can easily add 150 gallons to the capacity of your skimmer.

If ordering a replacement injector assembly, please specify the model skimmer you have in the order. For Large, XL, Recirculating and Commercial models, also select qualifying option below. Orders without a model specified will be filled with the standard MR-1/MR-2 injector.